Headlight upgrade ideas

[ryukin2000]

Re: Headlight upgrade ideas

I think you're right, one is 9v and the other 12v. I found someone who said they were using "Wolfsen Tech solenoid controllers" on vwvortex (link) which change 3 wires to 2 wires.

However I can't find these anywhere and someone else said the easier solution is just to wire both 9v and 12v to the red and it should work - thinking this may damage something though, I thought perhaps adding a resistor before the 9V lead would help?

One last question: the D2S bi-xenon bulbs do not have 2 filaments or 2 bulbs, the high/low is done by the shutter, right?

yup. Bi Xenon is a feature of the Projector and not the bulb. the solenoid flips the shield and lets more all the light out.